EP2964091B1 - Dispositif de mesure de pression dans un fluide - Google Patents

Dispositif de mesure de pression dans un fluide Download PDF

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Publication number
EP2964091B1
EP2964091B1 EP14712612.2A EP14712612A EP2964091B1 EP 2964091 B1 EP2964091 B1 EP 2964091B1 EP 14712612 A EP14712612 A EP 14712612A EP 2964091 B1 EP2964091 B1 EP 2964091B1
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EP
European Patent Office
Prior art keywords
pressure
measurement chamber
pressure transducer
die
measuring
Prior art date
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Active
Application number
EP14712612.2A
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German (de)
English (en)
Other versions
EP2964091A1 (fr
Inventor
Michael Gondy JENSEN
Kristine Larsen
David Van Gorkom
Jens Witte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Medical Measurement Systems BV
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Medical Measurement Systems BV
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Publication of EP2964091A1 publication Critical patent/EP2964091A1/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/20—Measuring for diagnostic purposes; Identification of persons for measuring urological functions restricted to the evaluation of the urinary system
    • A61B5/202—Assessing bladder functions, e.g. incontinence assessment
    • A61B5/205—Determining bladder or urethral pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/42—Detecting, measuring or recording for evaluating the gastrointestinal, the endocrine or the exocrine systems
    • A61B5/4222—Evaluating particular parts, e.g. particular organs
    • A61B5/4255—Intestines, colon or appendix
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0007—Fluidic connecting means
    • G01L19/0023—Fluidic connecting means for flowthrough systems having a flexible pressure transmitting element
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0007—Fluidic connecting means
    • G01L19/003—Fluidic connecting means using a detachable interface or adapter between the process medium and the pressure gauge
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
    • A61B2560/04—Constructional details of apparatus
    • A61B2560/0443—Modular apparatus
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0247—Pressure sensors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/04—Arrangements of multiple sensors of the same type
    • A61B2562/043—Arrangements of multiple sensors of the same type in a linear array

Definitions

  • diagnostic pressure measurement is known in particular in urodynamics.
  • the pressure in the body is directed to external pressure sensors via a water column, which passes through the lumens of the catheters and pressure tubing. There, one then measures the pressure in the body, including a hydrostatic pressure, which results from the height difference between the sensors and the measuring location.
  • This pressure offset is compensated either by a defined positioning of the sensors (Os Pubis height in the urodynamics) or by electronic zeroing.
  • the US 2003 200 812 A1 discloses a pressure dome which is coupled to a gel-filled chamber, with a measuring membrane with an opposite sensor, by means of hooks.
  • a suitable gas-tight membrane material prevents air from entering between the diaphragm of the pressure dome and the measuring diaphragm.
  • the DE 10 2008 015 322 A1 discloses a system element having a measuring chamber for releasably sealing a transducer to a fluid system.
  • the membrane of the measuring chamber on a circumferential bead with holes. Pins engage in these holes to secure the membrane against peeling off.
  • the WO 1999 037 983 A2 discloses a connector for connecting a transducer to a sealed fluid system having a pressure dome a membrane, for the mechanical coupling of these parts by means of a snap connection.
  • the EP 0 208 955 A2 discloses a method of making a pressure transmitting contact between the diaphragm of a pressure dome and the pressure transducer of a transducer. For this purpose, noses of the transducer are fixed to the pressure dome by means of clamps.
  • the present invention comprises a device for measuring pressure in a fluid, comprising a coupling element, at least one pressure transducer and at least one measuring chamber which can be filled with a fluid, wherein the measuring chamber is mechanically coupled to the measuring surface of the pressure transducer via a membrane and the measuring chamber has at least two connection points for a fluid flow.
  • the device is characterized in that the at least one pressure transducer is arranged in the coupling element, and the at least one measuring chamber has two opposite outer webs, wherein one of the webs engages in a clamping edge of the coupling element, and the other web engages in a pressure roller, wherein the Pressure roller rotatably mounted and non-positively connected to the coupling unit.
  • these fluids are stored in fluid reservoirs which are also known in the prior art, for example in the form of infusion bottles or infusion bags.
  • the pressure transducer is according to a preferred embodiment, a mechano-electrical pressure transducer and preferably at least the measuring range of the pressure transducer positively covered by the membrane.
  • the measuring range of the pressure transducer is arranged centrally with respect to the base of the measuring chamber
  • the measuring chamber further preferably has a substantially circular base surface, alternatively or in combination, the base surface is open and / or the membrane covering the open base and / or the membrane is made of a material which is selected from a group which silicone, Latex, rubber, combinations thereof and the like.
  • the membrane is an integral part of the measuring chamber.
  • the interior of the measuring chamber is substantially dome-shaped and / or the dome-shaped interior has a flattening in the central region. It is also designed so that it can accommodate a volume of the fluid which is between 0.1 cm 3 and 10 cm 3 , preferably between 1 cm 3 and 5 cm 3 and / or the base area of the measuring chamber between 0 , 1 cm 2 and 5 cm 2 , preferably between 1 cm 2 and 2.5 cm 2 .
  • the device according to the invention for pressure measurement in a fluid comprises at least two, preferably a plurality of measuring chambers, which are preferably connected to one another directly or indirectly at a web-free outer edge.
  • the measuring chamber and / or the coupling element are according to the present invention at least partially or partially made of a material which is selected from a group consisting of duroplastic and thermoplastic plastic and in particular polyphenylene sulfide, polypropylene, Poly-1-butene, polyvinyl chloride, polyvinylidene chloride, polymethyl methacrylate, polyacrylonitrile, polystyrene, polyacetal, polyvinyl alcohol, polyvinyl acetate, ionomers, fluoroplastic, polyethylene, polyamide, especially a partially aromatic polyamide, polycarbonate, polyester, polyphenylene oxide, polysulfone, polyvinyl acetal, polyurethane, and chlorinated polyether, cellulose nitrate, cellulose acetate, cellulose ether, phenol resin, urea resin, thiourea resin, melamine resin, alkyl resin, allyl resin, silicone, polyimide, polybenzimidazole, epoxy resin, casein plastic
  • connection points In order to connect the connection points as simply as possible with a hose system, the connection points according to a further embodiment, individually or in combination on a positive or negative Luer-lock connection.
  • the pressure transducer is arranged in a coupling element and the measuring chamber (s) are connected via the outer webs of the measuring chamber (s) and the clamping edge of the coupling element in such a way that the internal pressure in the pressure transducer is achieved via the flexible membrane Measuring chamber can be determined.
  • the coupling element has a pressure roller, in which a web of the measuring chamber engages and which is then locked by a rotational movement of the pressure roller and gelichzeitig the necessary contact force for connecting the measuring chamber with the pressure transducer provides.
  • the measuring chamber, the membrane and the pressure transducer are connected to one another in a fluid-tight manner or for the transmission of the measuring chamber internal pressure.
  • the rotation of the Pressure roller can be done manually or by means of a motor, in particular an electric motor, a stepper motor or a servomotor.
  • the object of the present invention in addition to the device for measuring pressure, is also achieved by a measuring chamber which can be filled with a fluid for use in a device for measuring pressure with at least two connection points for a fluid flow.
  • the connection points for the supply and discharge of the fluid are at an angle ( ⁇ ) of 180 ° to 60 °, Favor at an angle of 180 ° to 120 °, particularly preferably at an angle of 144 ° to 115 °, in particular in one Angle of approximately 150 ° to each other are arranged.
  • connection points can also be arranged at an angle ( ⁇ ) of 0 ° to 60 °, preferably of 12 ° to 18 °, preferably of less than 60 ° and in particular of approximately 15 ° to the base surface of the measuring chamber.
  • ⁇ angle
  • at least one of the connection points is provided with a positive or negative Luer-lock connection.
  • the base area is to be understood in particular as the area which is aligned with the pressure transducer of the device for pressure measurement during the measurement.
  • the connection points are also arranged according to a particularly preferred embodiment at a distance to the base of 2 to 10 mm, preferably 4 to 8 mm and more preferably 6 mm and alternatively or in combination, at least one of the openings of the connection points in the interior of the measuring chamber at least in sections, one of the base surface facing formation.
  • the interior of the measuring chamber further preferably has a substantially circular base surface, which is open and / or the membrane covers the open base.
  • the membrane according to another particularly preferred embodiment is made of a material selected from a group including silicone, latex, rubber, combinations thereof, and the like.
  • the interior of the measuring chamber can also be substantially dome-shaped and / or be flattened in the central area.
  • the measuring chamber comprises at least two opposite Outside edges webs, wherein at least one further measuring chamber is arranged alternatively or in combination on at least one of the web-free edges.
  • the present invention also expressly includes the use of the above-described measuring chamber for a device for measuring the pressure of fluid or fluids, wherein the measuring chamber and the device i.a. and preferably used in medicine or medical technology, in particular in the field of urodynamics and gastroenterology, in particular for bladder, rectal and Urethral horrhock.
  • FIG. 1 schematically the construction of a device for pressure measurement with water-filled disposable catheters is shown.
  • a pressure reducer 3 and two-way valves 4 are shown in front of the pressure sensors 6.
  • three-way valves 5 are arranged and the corresponding lines are referred to as P ura 7, P ves 8 and P abd 9.
  • P ura 7, P ves 8 and P abd 9 About the pressure transmission hoses 10 is the Infusion solution from the bag 1 to the rectal catheter 11 and the UDP catheter 12 passed.
  • the saline solution from the bottle 16 is supplied to the UDP catheter 12 from the bottle 16 with, for example, a saline solution via the roller pump 14 and the drip chamber 13.
  • FIG. 2 the structure of a pressure measuring system according to the invention is shown.
  • Reference numeral 22 represents a roller pump for conveying the medium through the hose system.
  • the system further includes a control system 31 with fully automatic algorithm for ventilating the tubing system with catheters, finding resting pressures and zeroing the measurement system utilizing the functionality of the individual components.
  • the vent hoses 34 to 36 for the three - optionally as many - pressure channels and the dome cassette 25 are integrated.
  • the pump or infusion tube 21 has a tapping mandrel 30 for an infusion bag and Luer-locks 37 for connecting the catheter.
  • the hose system in this area has a suitable compressible hose section 31 which is integrated into the hose system by appropriate connectors 32.
  • the tube system is divided into the four tubes 33 to 36 shown here.
  • the tube 33 comprises in addition to the actual tube 42 and the spacer 43, as in the detailed representation of Fig. 3 can be seen.
  • the integration of three - possibly as many - Domen in a dome cassette and the common coupling of the channels to the sensors via a pressure roller and clamping edge is particularly advantageous.
  • the webs integrated in the dome cassette on the pressure roller and clamping edge sides act as spring elements which produce the required contact pressure of the diaphragm, which is preferably arranged on the bottom section of the pressure dome, on the sensors.
  • FIG. 4 shows an exploded view for the compilation of the Druckdomkassette 51 with the pressure measuring sensors 54.
  • the pressure roller 52 in addition to the dome cassette 51, the pressure roller 52, the clamping edge 55 having receptacle 53 can be seen.
  • the reference numeral 56 the positions with respect to the dome cassette 51 are shown, which are equipped with a pressure transducer. In position 57, no pressure transmitter is provided.
  • FIGS. 5a to 5d For example, detailed illustrations of the dome cassette 25 and its locking arrangement are shown on the pressure measuring sensors.
  • FIG. 5a a side view of the dome cassette 25 shown, in which the terminals 60, the Antiksteg 61 and parts of the fluid dome 62 can be seen.
  • FIG. 5b the top view of the dome cassette 25 is shown, in which additionally the other Connections 63 and the rear Antiksteg 64 can be seen.
  • FIG. 5c is another side view, in which in addition to the two terminals 60 and 63, and the two Antikstege 61 and 64 and the angular arrangement of the leads 60 and 63 are shown to each other with the angle ⁇ and the bottom at the angle ⁇ .
  • FIG. 5d shows the arrangement of the dome cassette 25 on the pressure transducers, wherein the dome cassette 25 is aligned over the Andrucksteg 61 in the receptacle 53 and fixed by means of the pressure roller 52 and the axial slit in combination with the twisting.
  • the receptacle 53 also includes the guide 69 and 68, as a direct or indirect component of the receptacle, which also includes the pressure transducers (not shown here) in the corresponding positions.
  • the terminals 60 and 63 can be seen in this illustration, wherein the terminal 60 also has a Luer lock 65.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Physiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Urology & Nephrology (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Endocrinology (AREA)
  • External Artificial Organs (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Measuring Fluid Pressure (AREA)

Claims (10)

  1. Dispositif en vue de la mesure de la pression dans un fluide,
    se composant d'un élément de couplage (25),
    d'au moins un convertisseur de pression (56),
    d'au moins une chambre de mesure remplissable par un fluide (62), la chambre de mesure (62) étant accouplé via une membrane (66) de manière mécanique avec la surface de mesure du convertisseur de pression (56) et la chambre de mesure (62) présentant au moins deux points de jonction (60, 63) pour un courant de fluide, et
    d'un cylindre de compression (52), avec lequel la chambre de mesure (62) est bloquée, caractérisé en ce
    qu'au moins l'un des convertisseurs de pression (56) est disposé dans l'élément de couplage (25), et
    qu'au moins l'une des chambres de mesure (62) présente deux entretoises extérieures opposées (61, 64), une des entretoises (61) s'engrenant dans une arête de serrage (53) de l'élément de couplage (25) et l'autre entretoise (64) s'engrenant dans le cylindre de compression (52), le cylindre de compression (52) étant monté sur paliers tournants et reliable mécaniquement avec l'unité de couplage (51).
  2. Dispositif selon la revendication 1, caractérisé en ce que
    les points de jonction sont disposés les uns par rapport aux autres dans un angle (a) de 180° à 60°, de préférence dans un angle de 180° à 120°, de préférence particulière dans un angle de 144° à 115°, notamment dans un angle d'env. 150°.
  3. Dispositif selon la revendication 1, caractérisé en ce que
    les points de jonction sont disposés dans un angle (β) de 0° à 60°, de préférence de 12 à 18°, de préférence de moins de 60° et notamment d'env. 15° par rapport à la surface de base de la chambre de mesure.
  4. Dispositif selon une quelconque des revendications précédentes, caractérisé en ce que
    l'intérieur de la chambre de mesure (62) présente pour l'essentiel une surface de base circulaire.
  5. Dispositif selon une quelconque des revendications précédentes, caractérisé en ce que
    la surface de base est ouverte et/ou la membrane (66) couvre la surface de base ouverte et/ou la membrane (66) est fabriquée à partir d'une matière qui est sélectionnée à partir d'un groupe qui contient de la silicone, du latex, du caoutchouc, des combinaisons de ceux-ci et similaires.
  6. Dispositif selon une quelconque des revendications précédentes, caractérisé en ce que
    le convertisseur de pression (54) est un convertisseur de pression mécano-électrique et de préférence au moins la plage de mesure du convertisseur de pression (54) est couverte mécaniquement par la membrane (66) et/ou la plage de mesure du convertisseur de pression (54) est disposée de manière centrée par rapport à la surface de base de la chambre de mesure (62).
  7. Dispositif selon une quelconque des revendications précédentes, caractérisé en ce que,
    en tournant le cylindre de compression, la chambre de mesure (62), la membrane (66) et le convertisseur de pression (54) sont reliés les uns avec les autres de manière étanche aux liquides.
  8. Dispositif selon une quelconque des revendications précédentes, caractérisé en ce que
    la chambre de mesure (62) possède un volume d'entre 0,1 cm3 et 10 cm3, de préférence d'entre 1 cm3 et 5 cm3 et/ou une surface de base d'entre 0,1 cm2 et 5 cm2, de préférence d'entre 1 cm2 et 2,5 cm2.
  9. Dispositif selon une quelconque des revendications précédentes, caractérisé en ce
    qu'au moins deux chambres de mesure (62) sont reliées l'une avec l'autre sur les bords extérieurs non nervurés.
  10. Dispositif selon une quelconque des revendications précédentes, caractérisé en ce que
    l'élément de couplage (25) et/ou la chambre de mesure (62) est fabriqué au moins par section ou partiellement en une matière qui est sélectionnée à partir d'un groupe qui comporte des duroplastiques et des thermoplastiques et notamment du polysulfure de phénylène, du polypropylène, du poly-1-butylène, du chlorure de polyvinyle, du chlorure de polyvinylidène, du polyméthacrylate de méthyle, du polyacrylonitrile, du polystyrène, du polyacétal, de l'alcool polyvinylique, du polyacétate de vinyle, des ionomères, du plastique fluoré, du polyéthylène, du polyamide, notamment un polyamide aromatique partiel, du polycarbonate, du polyester, du polyphénylène-oxyde, du polysulfone, de l'acétal polyvinylique, du polyuréthane, et du polyéther chloré, du nitrate de cellulose, de l'acétate de cellulose, de l'éther de cellulose, de la résine phénolique, de la résine d'urée, de la résine thio-urée, de la résine de mélamine, de la résine d'alcoyle, de la résine allylique, de la silicone, du polyimide, du polybenzimidazole, de la résine époxy, du plastique à la caséine, du polyuréthane réticulé, de la résine polyester non saturée, de l'acrylonitrile-butadiène-styrène, de l'ester acrylique-styrène-acrylonitrile, des métaux comme par exemple l'inox, l'aluminium, des combinaisons de ceux-ci et des produits similaires.
EP14712612.2A 2013-03-04 2014-02-28 Dispositif de mesure de pression dans un fluide Active EP2964091B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310102085 DE102013102085A1 (de) 2013-03-04 2013-03-04 Vorrichtung zur Druckmessung in einem Fluid
PCT/EP2014/053967 WO2014135456A1 (fr) 2013-03-04 2014-02-28 Dispositif de mesure de pression dans un fluide

Publications (2)

Publication Number Publication Date
EP2964091A1 EP2964091A1 (fr) 2016-01-13
EP2964091B1 true EP2964091B1 (fr) 2019-04-24

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EP14712612.2A Active EP2964091B1 (fr) 2013-03-04 2014-02-28 Dispositif de mesure de pression dans un fluide

Country Status (5)

Country Link
US (2) US10390750B2 (fr)
EP (1) EP2964091B1 (fr)
CN (1) CN105163665B (fr)
DE (1) DE102013102085A1 (fr)
WO (1) WO2014135456A1 (fr)

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CN116429347B (zh) * 2023-04-23 2024-01-26 菏泽三垒塑业股份有限公司 一种钢塑弯管气密性测试机

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Publication number Publication date
CN105163665A (zh) 2015-12-16
DE102013102085A1 (de) 2014-09-04
EP2964091A1 (fr) 2016-01-13
WO2014135456A1 (fr) 2014-09-12
CN105163665B (zh) 2019-05-07
US20160029941A1 (en) 2016-02-04
US10390750B2 (en) 2019-08-27
US20180289307A1 (en) 2018-10-11
US11627901B2 (en) 2023-04-18

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